Here's a tip for you to see if a blank really fits your stock. Take a manila folder and trace the outline of your stock (using a straightedge to make sure you have the outline). Now cut out the tracing and lay the outside of your tracing over the blank. You will see the figure clearly how it will look as a stock and you can position it on the blank for best effect. Good tip above to make sure you have room for a forearm. What the other side looks like will have a big effect on what it's worth.

Make sure the blank is big enough in all dimensions before you buy it.